Network side device, user equipment, and spectrum sharing method thereof

ABSTRACT

The present invention discloses a spectrum sharing method and apparatus thereof. The method includes: acquiring a cycle period of a shared frequency between a first system and a second system; obtaining time slice allocation information of the cycle period; and sending the time slice allocation information to a user equipment. By means of the foregoing manner, a shared frequency can be allocated, so that efficiency of transmitting system data can be effectively improved.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.14/996,721, filed on Jan. 15, 2016, which is a continuation ofInternational Patent Application No. PCT/CN2013/079587 filed on Jul. 18,2013. All of the aforementioned applications are hereby incorporated byreference in their entireties.

TECHNICAL FIELD

The present invention relates to the field of communicationstechnologies, and in particular, to a spectrum sharing method andapparatus thereof.

BACKGROUND

In the field of communications technologies, a spectrum resource is animportant resource for a wireless communications system. Duringdeployment by using an existing access technology, a correspondingfrequency needs to be determined first. During deployment of a networkby using an access technology, different frequencies are selected for anexisting Universal Mobile Telecommunications System (UMTS) and a LongTerm Evolution (LTE) system, so as to perform data transmission by usinga spectrum resource. During data transmission of an existing system, acase of a shortage of spectrum resources that is caused by excessivelyheavy load of the system or a waste of spectrum resources that is causedby excessively light load of the system usually occurs, which easilyresults in unbalanced use of spectrum resources.

SUMMARY

In view of this, embodiments of the present invention provide a networkside device, user equipment, and a spectrum sharing method thereof, sothat a shared frequency can be allocated, according to load informationof a first system and load information of a second system, to the firstsystem or the second system to perform data transmission, therebyimproving efficiency of transmitting system data.

A first aspect provides a spectrum sharing method, where the methodincludes: acquiring load information of a first system and loadinformation of a second system; acquiring a cycle period of a sharedfrequency of the first system and the second system; obtaining timeslice allocation information according to the load information of thefirst system, the load information of the second system, and the cycleperiod, where the time slice allocation information includes a firsttime slice and a second time slice; and sending the time sliceallocation information to user equipment, so that the user equipmentperforms data transmission at the first time slice by using the firstsystem and by using the shared frequency and performs data transmissionat the second time slice by using the second system and by using theshared frequency.

With reference to the implementation manner of the first aspect, in afirst possible implementation manner, the method further includes:receiving channel quality indication CQI information or precodingcontrol indication PCI information that is generated according to thetime slice allocation information and is sent by the user equipment, andmonitoring, by using the CQI information or the PCI information, channelquality of data transmission performed by using the shared frequency.

With reference to the implementation manner of the first aspect, in asecond possible implementation manner, the time slice allocationinformation includes at least one of a valid time, a valid range, andtime slicing information.

With reference to the second possible implementation manner of the firstaspect, in a third possible implementation manner, the valid range is avalid range of a set of cells in which time slices are allocated to bevalid.

With reference to the implementation manner of the first aspect, in afourth possible implementation manner, the sending the time sliceallocation information to user equipment, so that the user equipmentperforms data transmission at the first time slice by using the firstsystem and by using the shared frequency and performs data transmissionat the second time slice by using the second system and by using theshared frequency includes: sending the time slice allocation informationto a first network device or a second network device, and sending, bythe first network device or the second network device, the time sliceallocation information to the user equipment, so that the user equipmentperforms data transmission at the first time slice by using the firstsystem and by using the shared frequency and performs data transmissionat the second time slice by using the second system and by using theshared frequency.

With reference to the fourth possible implementation manner of the firstaspect, in a fifth possible implementation manner, the first networkdevice is one of a wireless network controller, a base stationcontroller, and an evolved base station, and the second network deviceis one of an evolved base station, a wireless network controller, abasestation controller, and an independent controller.

With reference to the implementation manner of the first aspect, in asixth possible implementation manner, the first system is a UniversalMobile Telecommunications System UMTS, and the second system is a LongTerm Evolution technology LTE system.

A second aspect provides a network side device, where the network sidedevice includes a second network device, and the second network deviceincludes a receiving unit, a processing unit, and a sending unit, wherethe receiving unit acquires load information of a first system and loadinformation of a second system; the receiving unit acquires a cycleperiod of a shared frequency of the first system and the second system;the processing unit obtains time slice allocation information accordingto the load information of the first system, the load information of thesecond system, and the cycle period, where the time slice allocationinformation includes a first time slice and a second time slice; and thesending unit sends the time slice allocation information to userequipment, so that the user equipment performs data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency.

With reference to the implementation manner of the second aspect, in afirst possible implementation manner, the receiving unit receives CQIinformation or PCI information that is generated according to the timeslice allocation information and is sent by the user equipment, and theprocessing unit monitors, by using the CQI information or the PCIinformation, channel quality of data transmission performed by using theshared frequency.

With reference to the implementation manner of the second aspect, in asecond possible implementation manner, the time slice allocationinformation includes at least one of a valid time, a valid range, andtime slicing information.

With reference to the second possible implementation manner of thesecond aspect, in a third possible implementation manner, the validrange is a valid range of a set of cells in which time slices areallocated to be valid.

With reference to the implementation manner of the second aspect, in afourth possible implementation manner, the sending unit sends the timeslice allocation information to a first network device or the secondnetwork device, and the first network device or the second networkdevice sends the time slice allocation information to the userequipment, so that the user equipment performs data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency.

With reference to the fourth possible implementation manner of thesecond aspect, in a fifth possible implementation manner, the firstnetwork device is one of a wireless network controller, a base stationcontroller, and an evolved base station, and the second network deviceis one of an evolved base station, a wireless network controller, abasestation controller, and an independent controller.

With reference to the implementation manner of the second aspect, in asixth possible implementation manner, the first system is a UMTS, andthe second system is an LTE system.

A third aspect provides a spectrum sharing method, where the methodincludes: receiving time slice allocation information, where the timeslice allocation information includes a first time slice and a secondtime slice, and the time slice allocation information is generatedaccording to load information of a first system, load information of asecond system, and a cycle period of a shared frequency of the firstsystem and the second system; and sending the time slice allocationinformation to user equipment, so that the user equipment performs datatransmission at the first time slice by using the first system and byusing the shared frequency and performs data transmission at the secondtime slice by using the second system and by using the shared frequency.

With reference to the implementation manner of the third aspect, in afirst possible implementation manner, the method further includes:receiving CQI information or PCI information that is generated accordingto the time slice allocation information and is sent by the userequipment, and monitoring, by using the CQI information or the PCIinformation, channel quality of data transmission performed by using theshared frequency.

With reference to the implementation manner of the third aspect, in asecond possible implementation manner, the time slice allocationinformation includes at least one of a valid time, a valid range, andtime slicing information.

With reference to the second possible implementation manner of the thirdaspect, in a third possible implementation manner, the valid range is avalid range of a set of cells in which time slices are allocated to bevalid.

With reference to the implementation manner of the third aspect, in afourth possible implementation manner, the first system is a UMTS, andthe second system is an LTE system.

A fourth aspect provides a network side device, where the network sidedevice includes a first network device, and the first network deviceincludes a receiving unit, a processing unit, and a sending unit, wherethe receiving unit receives time slice allocation information, where thetime slice allocation information includes a first time slice and asecond time slice, the time slice allocation information is generatedaccording to load information of a first system, load information of asecond system, and a cycle period of a shared frequency of the firstsystem and the second system, and the sending unit sends the time sliceallocation information to user equipment, so that the user equipmentperforms data transmission at the first time slice by using the firstsystem and by using the shared frequency and performs data transmissionat the second time slice by using the second system and by using theshared frequency.

With reference to the implementation manner of the fourth aspect, in afirst possible implementation manner, the receiving unit receives CQIinformation or PCI information that is generated according to the timeslice allocation information and is sent by the user equipment, and theprocessing unit monitors, by using the CQI information or the PCIinformation, channel quality of data transmission performed by using theshared frequency.

With reference to the implementation manner of the fourth aspect, in asecond possible implementation manner, the time slice allocationinformation includes at least one of a valid time, a valid range, andtime slicing information.

With reference to the second possible implementation manner of thefourth aspect, in a third possible implementation manner, the validrange is a valid range of a set of cells in which time slices areallocated to be valid.

With reference to the implementation manner of the fourth aspect, in afourth possible implementation manner, the first system is a UMTS, andthe second system is an LTE system.

A fifth aspect provides a spectrum sharing method, where the methodincludes: receiving time slice allocation information, where the timeslice allocation information includes a first time slice and a secondtime slice, and the time slice allocation information is generatedaccording to load information of a first system, load information of asecond system, and a cycle period of a shared frequency of the firstsystem and the second system; performing data transmission at the firsttime slice by using the first system and by using the shared frequency;and performing data transmission at the second time slice by using thesecond system and by using the shared frequency.

With reference to the implementation manner of the fifth aspect, in afirst possible implementation manner, the method further includes:generating CQI information or PCI information according to the timeslice allocation information, and sending the CQI information or the PCIinformation to a first network device or a second network device.

With reference to the first possible implementation manner of the fifthaspect, in a second possible implementation manner, the first networkdevice is one of a wireless network controller, a base stationcontroller, and an evolved base station, and the second network deviceis one of an evolved base station, a wireless network controller, a basestation controller, and an independent controller.

With reference to the implementation manner of the fifth aspect, in athird possible implementation manner, the time slice allocationinformation includes at least one of a valid time, a valid range, andtime slicing information.

With reference to the third possible implementation manner of the fifthaspect, in a fourth possible implementation manner, the valid range is avalid range of a set of cells in which time slices are allocated to bevalid.

With reference to the implementation manner of the fifth aspect, in afifth possible implementation manner, the first system is a UMTS, andthe second system is an LTE system.

A sixth aspect provides user equipment, the user equipment including areceiving unit, a processing unit, and a sending unit, where thereceiving unit receives time slice allocation information, where thetime slice allocation information includes a first time slice and asecond time slice, and the time slice allocation information isgenerated according to load information of a first system, loadinformation of a second system, and a cycle period of a shared frequencyof the first system and the second system; the user equipment performsdata transmission at the first time slice by using the first system andby using the shared frequency; and the user equipment performs datatransmission at the second time slice by using the second system and byusing the shared frequency.

With reference to the implementation manner of the sixth aspect, in afirst possible implementation manner, the processing unit generates CQIinformation or PCI information according to the time slice allocationinformation, and the sending unit sends the CQI information or the PCIinformation to a first network device or a second network device.

With reference to the first possible implementation manner of the sixthaspect, in a second possible implementation manner, the first networkdevice is one of a wireless network controller, a base stationcontroller, and an evolved base station, and the second network deviceis one of an evolved base station, a wireless network controller, abasestation controller, and an independent controller.

With reference to the implementation manner of the sixth aspect, in athird possible implementation manner, the time slice allocationinformation includes at least one of a valid time, a valid range, andtime slicing information.

With reference to the third possible implementation manner of the sixthaspect, in a fourth possible implementation manner, the valid range is avalid range of a set of cells in which time slices are allocated to bevalid.

With reference to the implementation manner of the sixth aspect, in afifth possible implementation manner, the first system is a UMTS, andthe second system is an LTE system.

By means of the foregoing solutions, beneficial effects of the presentinvention are as follows: In the present invention, a second networkdevice obtains time slice allocation information according to loadinformation of a first system, load information of a second system, anda cycle period of a shared frequency of the first system and the secondsystem, and a first network device or the second network device sendsthe time slice allocation information to user equipment, where the timeslice allocation information includes a first time slice and a secondtime slice, so that the user equipment performs data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency, therebyeffectively improving efficiency of transmitting system data.

BRIEF DESCRIPTION OF THE DRAWINGS

To describe the technical solutions in the embodiments of the presentinvention more clearly, the following briefly introduces theaccompanying drawings required for describing the embodiments.Apparently, the accompanying drawings in the following description showmerely some embodiments of the present invention, and a person ofordinary skill in the art may still derive other drawings from theseaccompanying drawings without creative efforts. Where:

FIG. 1 is a schematic structural diagram of a communications systemaccording to a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a communications systemaccording to a second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a communications systemaccording to a third embodiment of the present invention; and

FIG. 4 is a flowchart of a spectrum sharing method according to a firstembodiment of the present invention.

DETAILED DESCRIPTION

The following clearly describes the technical solutions in theembodiments of the present invention with reference to the accompanyingdrawings in the embodiments of the present invention. Apparently, thedescribed embodiments are merely some but not all of the embodiments ofthe present invention. All other embodiments obtained by a person ofordinary skill in the art based on the embodiments of the presentinvention without creative efforts shall fall within the protectionscope of the present invention.

Refer to FIG. 1, which is a schematic structural diagram of acommunications system according to a first embodiment of the presentinvention. The communications system includes user equipment 10 and anetwork side device 11. The network side device 11 performs datatransmission with the user equipment 10 by using a first system or asecond system.

In this embodiment, the network side device 11 is provided with a sharedfrequency of the first system and the second system, so that the firstsystem performs data transmission by using the shared frequency, or thesecond system performs data transmission by using the shared frequency.Optionally, the first system is a UMTS, and the second system is an LTEsystem. In other embodiments, the first system is an LTE system, and thesecond system is a UMTS. Alternatively, the first system and the secondsystem may be a combination of an LTE system, a UMTS, and a GlobalSystem for Mobile Communications (GSM) and other communications systems;for example, the first system is a GSM, and the second system is a UMTS.

The network side device 11 includes a first network device 12 and asecond network device 13. When the network side device 11 performs datatransmission with the user equipment 10, the second network device 13first acquires load information of the first system and load informationof the second system, and acquires a cycle period of the sharedfrequency of the first system and the second system, and the secondnetwork device 13 then obtains time slice allocation informationaccording to the load information of the first system, the loadinformation of the second system, and the cycle period, where the timeslice allocation information includes a first time slice and a secondtime slice. In this embodiment, the second network device 13 preferablyslices the cycle period into the first time slice and the second timeslice according to a proportion of load of the first system to load ofthe second system. For example, the proportion of the load of the firstsystem to the load of the second system is 1:2, so that a proportion ofthe first time slice to the second time slice is 1:2. In addition, thesecond network device 13 may determine valid times of the first timeslice and the second time slice within the cycle period according to theproportion of the load of the first system to the load of the secondsystem, where the valid time may be a specific time point. In otherembodiments, the second network device 13 obtains the time sliceallocation information according to the load information of the firstsystem, the load information of the second system, and the cycle periodin other manners, for example, by using a formula algorithm.

After the second network device 13 generates the time slice allocationinformation, the second network device 13 sends the time sliceallocation information to the first network device 12 or the secondnetwork device 13, and the first network device 12 or the second networkdevice 13 sends the time slice allocation information to the userequipment 10. After the user equipment 10 receives the time sliceallocation information, according to the time slice allocationinformation, the user equipment 10 performs, data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency. In addition,the user equipment 10 generates channel quality indication (CQI)information or precoding control indication (PCI) information accordingto the time slice allocation information, and sends the CQI informationor the PCI information to the first network device 12 or the secondnetwork device 13, so as to feed back, to the first network device 12 orthe second network device 13, channel quality of data transmissionperformed by the user equipment 10 at the first time slice or the secondtime slice by using the shared frequency.

In this embodiment, the time slice allocation information furtherincludes at least one of a valid time, a valid range, and time slicinginformation. A valid time point of a time slice within the cycle periodmay be determined by using the valid time, and additionally the validtime point of the time slice may be controlled by changing the validtime. The valid range is a valid range of a set of cells in which timeslices are allocated to be valid, and user equipment 10 of a cell inwhich a time slice is allocated to be valid and that may be determinedby using the valid range transmits data by using the shared frequency.The second network device 13 slices the cycle period into the first timeslice and the second time slice by using the time slicing information.

In this embodiment, a second network device obtains time sliceallocation information according to load information of a first system,load information of a second system, and a cycle period of a sharedfrequency of the first system and the second system, and sends the timeslice allocation information to user equipment, where the time sliceallocation information includes a first time slice and a second timeslice, so that the user equipment performs data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency, therebyeffectively improving efficiency of transmitting system data.

The present invention further provides a communications system accordingto a second embodiment, which is described in detail on the basis of thecommunications system disclosed in the first embodiment. As shown inFIG. 2, the first network device 12 includes a receiving unit 121, aprocessing unit 122, and a sending unit 123. The second network device13 includes a receiving unit 131, a processing unit 132, and a sendingunit 133. The user equipment 10 includes a receiving unit 101, aprocessing unit 102, and a sending unit 103.

In this embodiment, the receiving unit 131 of the second network device13 first acquires load information of a first system and loadinformation of a second system, and acquires a cycle period of a sharedfrequency of the first system and the second system, and then theprocessing unit 132 of the second network device 13 obtains time sliceallocation information according to the load information of the firstsystem, the load information of the second system, and the cycle period,where the time slice allocation information includes a first time sliceand a second time slice.

After the processing unit 132 generates the time slice allocationinformation, the sending unit 133 of the second network device 13 sendsthe time slice allocation information to the first network device 12.After the receiving unit 121 of the first network device 12 or thereceiving unit 131 of the second network device 13 receives the timeslice allocation information, the sending unit 123 of the first networkdevice 12 or the sending unit 133 of the second network device 13 sendsthe time slice allocation information to the user equipment 10. Afterthe receiving unit 101 of the user equipment 10 receives the time sliceallocation information, according to the time slice allocationinformation, the user equipment 10 performs data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency. In addition,the processing unit 102 of the user equipment 10 generates CQIinformation or PCI information according to the time slice allocationinformation, and the sending unit 103 of the user equipment 10 sends theCQI information or the PCI information to the receiving unit 121 of thefirst network device 12 or the receiving unit 131 of the second networkdevice 13, so as to feed back, to the first network device 12 or thesecond network device 13, channel quality of data transmission performedby the user equipment 10 at the first time slice or the second timeslice by using the shared frequency.

The present invention further provides a communications system accordingto a third embodiment, which is described in detail on the basis of thecommunications systems disclosed in the first embodiment and the secondembodiment. In this embodiment, the first network device 12 is one of awireless network controller, a base station controller, and an evolvedbase station, and the second network device 13 is one of an evolved basestation, a wireless network controller, abase station controller, and anindependent controller.

When the second network device 13 is an independent controller, thesecond network device 13 is configured to obtain time slice allocationinformation according to load information of a first system, loadinformation of a second system, and a cycle period, and send the timeslice allocation information to the first network device 12, so as tosend the time slice allocation information to the user equipment 10 byusing the first network device 12. The user equipment 10 generates CQIinformation or PCI information according to the time slice allocationinformation, and sends the CQI information or the PCI information to thefirst network device 12, so as to feed back, to the first network device12, channel quality of data transmission performed by the user equipment10 at a first time slice or a second time slice by using a sharedfrequency.

When the second network device 13 is an evolved base station, a wirelessnetwork controller, or a base station controller, the second networkdevice 13 is configured to obtain time slice allocation informationaccording to load information of a first system, load information of asecond system, and a cycle period, and send the time slice allocationinformation to the first network device 12 or the second network device13, so as to send the time slice allocation information to the userequipment 10 by using the first network device 12 or the second networkdevice 13. The user equipment 10 generates CQI information or PCIinformation according to the time slice allocation information, andsends the CQI information or the PCI information to the first networkdevice 12 or the second network device 13, so as to feed back, to thefirst network device 12 or the second network device 13, channel qualityof data transmission performed by the user equipment 10 at a first timeslice or a second time slice by using a shared frequency.

The present invention further provides a communications system accordingto a fourth embodiment, which is described in detail on the basis of thecommunications system disclosed in the first embodiment. As shown inFIG. 3, the first network device 12 includes a receiver 124, a processor125, and a sender 126. The second network device 13 includes a receiver134, a processor 135, and a sender 136. The user equipment 10 includes areceiver 104, a processor 105, and a sender 106.

In this embodiment, the receiver 134 of the second network device 13first acquires load information of a first system and load informationof a second system, and acquires a cycle period of a shared frequency ofthe first system and the second system, and then the processor 135 ofthe second network device 13 obtains time slice allocation informationaccording to the load information of the first system, the loadinformation of the second system, and the cycle period, where the timeslice allocation information includes a first time slice and a secondtime slice.

After the processor 135 generates the time slice allocation information,the sender 136 of the second network device 13 sends the time sliceallocation information to the first network device 12. After thereceiver 124 of the first network device 12 or the receiver 134 of thesecond network device 13 receives the time slice allocation information,the sender 126 of the first network device 12 or the sender 136 of thesecond network device 13 sends the time slice allocation information tothe user equipment 10. After the receiver 104 of the user equipment 10receives the time slice allocation information, according to the timeslice allocation information, the user equipment 10 performs datatransmission at the first time slice by using the first system and byusing the shared frequency and performs data transmission at the secondtime slice by using the second system and by using the shared frequency.In addition, the processor 105 of the user equipment 10 generates CQIinformation or PCI information according to the time slice allocationinformation. The sender 106 of the user equipment 10 sends the CQIinformation or the PCI information to the receiver 124 of the firstnetwork device 12 or the receiver 134 of the second network device 13,so as to feedback channel quality of data transmission performed by theuser equipment 10 at the first time slice or the second time slice byusing the shared frequency.

Further, the present invention further provides a spectrum sharingmethod according to a first embodiment, which is described in detail onthe basis of the communications system disclosed in the firstembodiment. As shown in FIG. 4, FIG. 4 is a flowchart of the spectrumsharing method according to the first embodiment of the presentinvention. The spectrum sharing method disclosed in this embodimentincludes the following steps:

Step S101: The second network device 13 acquires load information of afirst system, load information of a second system, and a cycle period ofa shared frequency of the first system and the second system, andobtains time slice allocation information according to the loadinformation of the first system, the load information of the secondsystem, and the cycle period.

Step S102: The second network device 13 sends the time slice allocationinformation to the first network device 12 or the second network device13.

Step S103: The first network device 12 or the second network device 13sends the time slice allocation information to the user equipment 10.

Step S104: The user equipment 10 performs data transmission according tothe time slice allocation information by using the shared frequency, andsends CQI information or PCI information to the first network device 12or the second network device 13 according to the time slice allocationinformation.

In step S101, the time slice allocation information includes a firsttime slice, a second time slice, a valid time, a valid range, or timeslicing information. Preferably, the first system is a UMTS, and thesecond system is an LTE system. The second network device 13 firstacquires the load information of the first system and the loadinformation of the second system, and acquires the cycle period of theshared frequency of the first system and the second system, and then thesecond network device 13 obtains the time slice allocation informationaccording to the load information of the first system, the loadinformation of the second system, and the cycle period. In thisembodiment, the second network device 13 preferably slices the cycleperiod into the first time slice and the second time slice according toa proportion of load of the first system to load of the second system.For example, the proportion of the load of the first system to the loadof the second system is 1:2, so that a proportion of the first timeslice to the second time slice is 1:2. In addition, the second networkdevice 13 may determine valid times of the first time slice and thesecond time slice within the cycle period according to the proportion ofthe load of the first system to the load of the second system, where thevalid time may be a specific time point. In another embodiment, thesecond network device 13 obtains the time slice allocation informationaccording to the load information of the first system, the loadinformation of the second system, and the cycle period in anothermanner, for example, by using a formula algorithm.

In step S104, after the user equipment 10 receives the time sliceallocation information, according to the time slice allocationinformation, the user equipment 10 performs data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency. In addition,the user equipment 10 generates the CQI information or the PCIinformation according to the time slice allocation information, andsends the CQI information or the PCI information to the first networkdevice 12 or the second network device 13, so as to feed back, to thefirst network device 12 or the second network device 13, channel qualityof data transmission performed by the user equipment 10 at the firsttime slice or the second time slice by using the shared frequency.

In this embodiment, a valid time point of a time slice within the cycleperiod may be determined by using the valid time, and additionally thevalid time point of the time slice may be controlled by changing thevalid time. The valid range is a valid range of a set of cells in whichtime slices are allocated to be valid, and user equipment 10 of a cellin which a time slice is allocated to be valid and that may bedetermined by using the valid range transmits data by using the sharedfrequency. The second network device 13 slices the cycle period into thefirst time slice and the second time slice by using the time slicinginformation.

In conclusion, in the present invention, a second network device obtainstime slice allocation information according to load information of afirst system, load information of a second system, and a cycle period ofa shared frequency of the first system and the second system, and afirst network device or the second network device sends the time sliceallocation information to user equipment, where the time sliceallocation information includes a first time slice and a second timeslice, so that the user equipment performs data transmission at thefirst time slice by using the first system and by using the sharedfrequency and performs data transmission at the second time slice byusing the second system and by using the shared frequency, therebyeffectively improving efficiency of transmitting system data.

The foregoing descriptions are merely embodiments of the presentinvention, and the protection scope of the present invention is notlimited thereto. All equivalent structure or process changes madeaccording to the content of this specification and accompanying drawingsin the present invention or by directly or indirectly applying thepresent invention in other related technical fields shall fall withinthe protection scope of the present invention.

What is claimed is:
 1. A spectrum sharing method, comprising: acquiringa cycle period of a shared frequency between a first system and a secondsystem; obtaining time slice allocation information of the cycle period;and sending the time slice allocation information to a user equipment;wherein the time slice allocation information comprises a first timeslice and a second time slice, the first time slice is for transmittingdata on the shared frequency by using the first system, the second timeslice is for transmitting data on the shared frequency by using thesecond system, the first system is a long term evolution (LTE) system,and the second system is a system different from the LTE system.
 2. Themethod according to claim 1, wherein the time slice allocationinformation further comprises at least one of a valid time, and a validrange.
 3. The method according to claim 2, wherein the valid range is avalid range of a set of cells in which time slices are allocated to bevalid.
 4. The method according to claim 1, further comprising: acquiringload information of the first system and load information of the secondsystem; wherein obtaining time slice allocation information of the cycleperiod, comprises: obtaining time slice allocation information of thecycle period according to the cycle period, the load information of thefirst system, and the load information of the second system.
 5. Aspectrum sharing apparatus, comprising: a processor, configured toacquire a cycle period of a shared frequency between a first system anda second system, and to obtain time slice allocation information of thecycle period, wherein the time slice allocation information comprises afirst time slice and a second time slice, the first time slice is fortransmitting data on the shared frequency by using the first system, thesecond time slice is for transmitting data on the shared frequency byusing the second system, the first system is a long term evolution (LTE)system, and the second system is a system different from the LTE system;and a transmitter, configured to send the time slice allocationinformation to user equipment.
 6. The spectrum sharing apparatusaccording to claim 5, wherein the time slice allocation informationfurther comprises at least one of a valid time, and a valid range. 7.The spectrum sharing apparatus according to claim 6, wherein the validrange is a valid range of a set of cells in which time slices areallocated to be valid.
 8. The spectrum sharing apparatus according toclaim 5, wherein the processor is further configured to: acquire loadinformation of the first system and load information of the secondsystem; and obtain time slice allocation information of the cycle periodaccording to the cycle period, the load information of the first system,and the load information of the second system.
 9. A spectrum sharingmethod, comprising: receiving time slice allocation information of acycle period of a shared frequency between a first system and a secondsystem, wherein the time slice allocation information comprises a firsttime slice for the first system and a second time slice for the secondsystem, the first system is a long term evolution (LTE) system, and thesecond system is a system different from the LTE system; performing datatransmission at the first time slice of the shared frequency by usingthe first system; and performing data transmission at the second timeslice of the shared frequency by using the second system.
 10. The methodaccording to claim 9, wherein the time slice allocation informationfurther comprises at least one of a valid time, and a valid range. 11.The method according to claim 10, wherein the valid range is a validrange of a set of cells in which time slices are allocated to be valid.12. A spectrum sharing apparatus, comprising: a receiver, configured toreceive time slice allocation information of a cycle period of a sharedfrequency between a first system and a second system, wherein the timeslice allocation information comprises a first time slice for the firstsystem and a second time slice for the second system, the first systemis a long term evolution (LTE) system, and the second system is a systemdifferent from the LTE system; and a transmitter, configured to senddata at the first time slice of the shared frequency by using the firstsystem, and to send data at the second time slice of the sharedfrequency by using the second system.
 13. The spectrum sharing apparatusaccording to claim 12, wherein the time slice allocation informationfurther comprises at least one of a valid time, and a valid range. 14.The spectrum sharing apparatus according to claim 13, wherein the validrange is a valid range of a set of cells in which time slices areallocated to be valid.